Sickle-grinder



(-No Model.)

WITNESSES W. S. INGRAHAM.

'SIGKLB GRINDER.

Patented Jan. 2, 1883-.

INYENTOR Wzm Z53 ATTORNEYS u PETERS. Pholo-Lilhognphm Wishingkm, n c.

PATENT Orrrca VILLIAM S. INGRAHAM, OF WAUKEGAN, ILLINOIS.

SICKLE-GRINDER.

SPECIFICATION forming part of Letters Patent No. 270,070, dated January2,. 1883.

Application filed November e, 1882.

T all whom it may concern Be it known that If'WILLIAM S. INGRAHAM, acitizen of the United States, residing at \Vaukegan, in the county ofLake and State of Illinois, haveinvented a new and valuable Improvementin Sickle-Grinders; .and I do hereby declare that' the following is afull, clear, and exact description of the construction and operation ofthe same, reference being bad to the annexed drawings, making a part ofthis specification, and to the letters and figures of -reference markedthereon.

Figure 1 of the drawings is a representation of this invention in avertical section. Fig. 2 is a front view of the top part of the machine.Fig. 3 is a detail view of the back of the upper portion. Fig. 4 showsthe holder thrown back in a side view. V

This invention has relation to devices for grinding the sickles ofmowers .and harvesting-machines; and it consists in theconstrnction andnovel arrangement of a slotted laterally-movable frame pivoted tothefront edge of ajoint-bar or connecting-piece, which is pivoted at itsrear edge to the frame of the grind stone, and the angularly-adjustableflanged holder pivoted to the laterally-movable frame, all ashereinafter set forth.

In the accompanying drawings, the letter A designates. the frame of agrindstone, B the stone, and 0 its shaft, which is preferablymountedonroller-bearin gs and provided with a crank, D, for connection with atreadle. The frame is provided with short extensions E of its rear arms,designed to support the attachment; or suitable bearings may be providedon a frame of any form in rear of and somewhat above the level of theshaft of the stone for this purpose. In the extensions or supports E aremade a number of transverse perforations, a, through which is passed thepivotrod F, whereby the attachment is connected to the frame of thegrindstone. Other devices may be used in connecting the attachment; butthe pivot-rod is preferred, as it is very simple and strong, and permitsthe attachment to be readily removed when the grindst'one is requiredfor work to which it is not suited.

v The attachment'is designed to relieve the workman of much of the laborin the manipu- (No model.)

lation'of a heavy sickle on a grindstone, as it sustains the weight ofthe sickle, and vet permits him to turn it in anloblique position, and

to move it endwise and forward and backward with facility. Theattachment consists of the 5 holder, the laterally-movable frame, andthe connecting-piece, to which the latter is pivoted.

The holder H is formed with a flange-bearing,

G, and is pivoted centrally near bearing to the frame K. j

The pivot is indicated at L, and is usually extended in front to form abearing for a levercam, M, whereby thesickle. when laid on the flange G,is secured thereto.

The frame K is an upright plate movid-ed with sliderjournals b,projecting laterally from its lower portion, and having the arc-shapedslot 0 in its upper part. The journals 1) engage bearings 61 of theconnecting-piece P, these hearings being arranged at the front edgethereof, and in such position that the journals 1) will have sufficientlateral motion therein to permit the adjustment of the holder inbringing the sickle in proper. relative position to opposite edges ofthe grindstone in sharpening 7 opposite edges of a tooth. Theconnectingpiece P is hinged to the frame of the grindstone by means ofthe pivot-rod F, which engages bearin gs e at its rear edge. A stop-bar,S, of the frame A, belowsaid connecting-piece, serves to prevent it fromfalling too low, so as to come in contact with the grindstone.

The holder H is angularly adjustable on the pivot L, so that it isreadily turned from side to side in sharpening'the beveled edges ofthe'85 sickle-teeth, the adjustment to the opposite edges of the'stonebeing easily effected. In order to hold the part H in secure relation tosaid flan get-he frame A after adjustment, the holder is provided with aprojection .or stud, g, in rear, which extends from its upper portionthrough the arc-slotc, and is threaded to receive a clamp-nut, h.

By means of this attachment a large and heavy sickle can beeasilyhandled on the 5 grindstone. The connecting-piece P is ad'-justable forward and backward, so that the attachment can be placed moreor less forward, according to the depth ofthe teeth of the sickle andthe height of the operator. The conuec- I00 t ion can also be verticallyadjusted to suit 1.. The combinatiomwith the frame of a grind-v stoneand the pivoted joint-bar or connectingpiece P, of the laterally-movableframe K and the flanged holder H, pivoted to said frame and angularlyadjustable thereon, substantially asspecified. 2. The sickleholdingattachment for grindstones, consisting of the joint-bar orconnecting-pieceP, its-pivot-rod, the laterally-movable frame K,'hingedto said connecting-piece, the flanged holder H, pivoted to the frame K,and its lever-cam, M, substantially as specified.

3. The combination, with an angularly-adjustable holder andlaterally-movable frame, to which said holder is pivoted, of a joint-baror connecting-piece having bearings at its front edge for theslide-journals of said frame, and pivoted at its rear edge to thegrindstoneframe, substantially as specified.

4. The combination, with the grindstoneframe A and its stop S, of thepivoted connecting-piece P, the laterally-movable frame K, andangularly-adj ustahle holder H, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of tyvo witnesses.

4 WILLIAM SIDNEY INGRAHAM.

Witnesses:

- 0. S. LINCOLN, O. J. Jones.

